全国6省市甲壳类水产品中铅和镉污染情况 调查与分析

Investigation and analysis of Pb and Cd pollution in 6 provinces and municipalities in the crustacea

中文关键词:  甲壳类水产品  铅  镉  污染评价

英文关键词:crustaceans aquatic products  Pb  Cd  pollution assessment

中文摘要:

      目的 研究流通环节和养殖环节中甲壳类水产品重金属铅(Pb)、镉(Cd)污染现状。方法 2014年1~5月对全国6省市(安徽、福建、湖北、江苏、辽宁、北京市)来自养殖环节和流通环节的181批次甲壳类水产品(克氏原螯虾76批次、河蟹87批次、梭子蟹18批次)进行Pb、Cd含量的测定, 并运用国家标准限量法、系统聚类法、单因子污染评价指数法、尼梅罗污染指数法、单因素方差法等对检测结果进行评价。结果 被调查的甲壳类水产品其肌肉、外壳和肝胰脏中的Pb、Cd含量超标率在30%以下, 样品残留量均在食品安全国家标准规定的安全限量范围内。结论 被检地区甲壳类水产品Pb和Cd污染程度均为安全和清洁, 本次被检的样品Pb和Cd的污染来源各异, 无相关性。但不同组织间检测结果表明, Pb、Cd在肝胰脏中有明显的富集, 且有少数残留量超标, 需引起有关部门的关注。

英文摘要:

      Objective To study the contamination status of Pb and Cd in crustacea in circulation link and farming link. Methods The content of Pb and Cd in 181 batches of crustacea in culturing and circulation links was determined (76 batches of procambarus clarkia, 87 batches of crab, and 18 batches of portunus tritubercu-latus) in 6 provinces and cities (Anhui, Fujian, Hubei, Jiangsu, Liaoning, and Beijing) from January to May in 2014, the results were evaluated by the national standard limit method, the system clustering method, the method of single factor pollution index, the Nemero pollution index method and the single factor variance method etc. Results The excessive rate of the content of Pb and Cd was below 30% in the shell, muscle and hepatopancreas of crustacean aquatic products, respectively, and the residues were in safety limit range required by national food safety standards. Conclusion The content of Pb and Cd in the samples are safe, which shows a weak correlation with the source. However, the Pb and Cd in liver and pancreas have obvious enrichment, and there are a few excessive residues, which should arouse the attention of related department.